Street light unit or head



' Jan. 15,1935. @.wBRADY 1,988,186

STREET LIGHT UNIT OR HEAD Filed April l, 1932 2 Slleets--Sheeil 1 Jan. 15, 1935. G. w. BRADY STREET LIGHT UNIT 0R HEAD Filed April 1, 1932 2 Sheets-Sheet 2 Patented Jan.r15, `1935 NUNITED gSTATE STREET LIGHT'UNIT`OR HEAD George W. Brady, New Britain,C`onn., assigner to The Brady E lectric & Manufacturing Company, New Britain, Conn.,a corporation of Connecticut Appiaauon April i, 1932, serial 10.602.497 iiV claims. (c1. 24o- 142) This invention relates to street light units and more particularly to a unit .which ordinarily consists of a canopy, a head secured to the canopy, and a reflector secured to the lower end of the head, the bulb furnishing the light being car- `ried by a socket secured rwithin Athe head.- .As will Vbe hereinafter explained, in'sorne instances the so-called head is omitted, and the reflector and bulb socket are secured directly to the canf opy, anditwill be understood that my invention also relates to improvements in this typeA of unit. The street light unit to which the present invention relates is, as the name implies, used in connectionwith street lighting and is,therefore, often used with relatively high voltages and is, of course, exposed to theweather. 'As a result,-the parts must be strongly constructed, well insulated, and firmly `secured together, so that there will be no danger of the parts ofthe unit becoming loose land either rattling, asia result of wind vibration, or, as may happen, becoming completely detached and dropping from place.

One-,object of thepr'esentinvention isto provide new and improved means for securing tokgether the various parts of a street light and unit such as described.- v v f A- further object ofthe invention is the provision of novel means for securing the reiiector to the vhead of the unit. y f j lStill another feature of the invention relates t'o'a novel method of securing the head ofthe unit to the canopy so as to prevent any likelihood of separation of these parts.

Other objects'of the invention reside in providing additional securing means for firmly securing the parts of the unit together so as to withstand the most severe weatherconditions without becomingv loosened or detached.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the vaccompanying drawingsi Fig. l is aside elevational View of a street 1 light head embodying my improvements;

Fig. 2 is an-enlarged sectional view of the same;' V

Fig. 3v is a sectional View on line 3-3 of Fig. 2;

Fig. 4 is a sectional View on line 4-4 of Fig. 2;

Fig. 5 is a fragmentary sectional viewon line 5-5 of Fig. 4; y l' El Fig. 6 is a fragmentary sectional View of a modified form of the invention; while,

Fig. 7 is a View similar to Fig. 6 showing another type of street light head.

To illustrate a preferred embodiment of my iof such openings being shown in the'drawings, al- Y -Jthough the number may be varied as deemed necessary', and the split ring 22 is providedwith -shownparticularly in Figs. 2 and 5, entirely withinvention, I have shown a street light head des'- ignated generally bythe numeral 10, whichcomprises a canopy 11, a head 12, and a reflector 13. The canopy is .usually made of metal and mayk conveniently be cast in the desired shape. The head 12 willordinarily be made of an insulating materiaLksuch `asporcelain or glass, while the 'reiiectoryl will ordinarily be made of metal.` 1The manufacturer of such devices is,v therefore, lconfronted with the problem of firmly securing il fto the vvporcelain or glass head 12, the metal `canopy, 11 and reflector `13.

In order'to secure the reflector Qto the head, n

`therformer is provided with an upstanding external-l-y threaded neck portion 14 which is adapted to be received in the large recess 15 which opens through lthe bottom of the head. The

`latter maybe providedwith side lugs 1'6 and l17 which are provided with openings 18 and 19 leadingint'o the recess 15, through which 0 wires may be passed to carry current toY the Vlamp socket. These lugs may also be provided with openings 2O and 21 in which the wires mayr 'be tied yto relieve ythe connections withthe lamp socket from any strain. 25

Within the recess 15 is disposed a ring 22 which,

'for a'purpose to be hereinafter explained, is a discontinuous ring,-being split axially, as shown at 23. k'The ring 22 is internally threaded to receive the threadedneck 14 of the reflector,

`and aty its upper end is-provided with inwardly projecting lugs 24, which may serve to limitvth entrance of the reflector neck therein.

IIhe ring 22 is designed to be positioned, as

in the head, the lower portion of the ring being substantially flush with the lower edge of the wall of the head, or, if preferred, may terminate above the lower edge of the head. The shoulder 25 upon the reflector may, therefore, abut rthe lower edge ofthe head so as to make a tight joint between Vthese parts. l

Ili` wall off'the head surrounding the recess l5 is `providedwith 'a number of openings 26, three 45 bosses 2'7 to enter said openings a slight distance y and thus vposition. the ring therein and prevent any 'movement of thev ring after it lhas once'been 50 securedin place. *Screws 28 and 28d/are passed through the openings 26 Vin the wall of thehead and are screwed into the ring 22. These screws draw the ring `outwardly "so that it fits tightly against the wall of the head surrounding-1 the re- Y cess 15, and the bosses 27 are drawn into the openings 26. It will, of course, be understood that the feature of employing a split ring enables this ring to be slightly compressed sothat it may be inserted within the head and thereafter drawn outwardly or expanded to effect secure ,engagement of the bosses k27 Within the openings 26. It will, therefore, be apparent that the ring, while positioned entirely within the head 12 of insulating material, will be firmly secured thereto` v15 in order to admit conducting wiresin certain instances wherein the unit will be wired fromthe top. It is also provided in its upper surface with two relatively deep recesses or'openings 32 Vand 33, the Vnumber of which may be, of course, varied as is deemed expedient.

The canopy 11 is, *as shown inkFigaZ; generally hollow and is of linvertedcup shape to vextend downwardly over the upper partwof the head- 12. `Projecting downwardly from the 'upper and inner surface of the canopy are two relatively long lugs 34 and35 provided with enlargedheads 36 and 37. These lugs are designed 4to enter the recesses 32 and 33, which recesses may be lled with a slow drying cementwhich,

when it sets, will Yrrnly secure thecanopy to the head.v The enlarged ends 36 and 37 of the downwardly projecting lugs will be embedded inthe cement and `prevent any liklihoodv ofthe lugs becoming disengaged therefrom. H Y

If desired, additional securing means may be employed between the canopy and the head to' Vassist in securing-these two parts together, al-

though usually it will be `found unnecessary to provide securing vmeans in addition .to those already described. For example, the upper portion of the head 12 within the canopy may be provided with a number of lateral recesses 38 which kmay be illed with lead o r like material 39, and Vscrews 40 passed through the canopy landinto the lead 39 to assist in securing the parts together. g f g y As a still further securing means, cement 41 may be inserted between the lowerportion of the canopy and the overlapped portion of the lhead, and if this is done, the head may be provided with .an exterior groove or grooves 42 tobe filled with this cement place.. Y

In Fig. 6 ofthe drawings, I have shown a somewhat modifled form of my invention wherein, in-

and assist in holding the canopy in jsteadiof the elongated lugs 34`and-,35shown in Fig. 2, short lugs 45 and 46 are providedlinto whichmachine bolts 47 and 48 may be threaded, :the machine vbolts `having heads 49 and 50 to be `e1'nb'ed cled v in the cement within the recesses 32 and 33. In some instances, it may be preferable to yprovide the` headed bolts 47 and 48 instead of the elongatedheaded lugs 34 and 35. `The function, however, `of the parts Willbe substantially. the same in either case.

VIn t certain installations, and Vparticularly Ain multiple lighting'xtures, Athe reflector is secured directly'to the canopy, and the insulatinghead .itj is not to be limited thereto in all its details,

cured to said ring, said Vhead being provided omitted. I have shown such a unit in Fig. 7 l where the reflector 51 is secured directly to the canopy 52. The canopy in this instance is substantially like that shown in Figs. 1 to 6 ofthe drawings, and, in particular, is like that shown in Fig. 6 in that it is provided with the lugs 45 and 46, to which are secured the machine bolts 47 and 48;. In this instance,the socket 53 is secured directly to the `canopy and'may be provided with perforations, through which the bolts 47 vand 48 may be passed, the socket being held in placegby nuts 54; vWiththis arrangement, it will be apparent that the socket 53 is adjustable upwardly andV downwardly by the bolts by adjusting the nuts 54 so that the position of the light bulb with respect to the reflector 51 may be changed, and thus the spread of the light from the lamp be varied. While yI have shown some preferred embodiments of my invention, it will be understood that but is capable of modication andvariation withinf; the spirit of the invention and within the scope of the appended claims.

What I claim is: Y 1. In a lightingunit, a head having an out-` wardly facing recess, a ring disposed within said recess and secured to the head and yprovided .with internal screw threads, a reflector having a threaded neck adapted to be engagedwith the threads of the ring, and an outwardly 'projecting flange below the neck and said ring lying wholly Within the recessI inthe head, whereby the reflector flange maybe set uptightly against the edgeofthehead. ,'.g v

2. A light' unitcomprising a head `and a, reflector, the head having an outwardly facing recess, a split ring disposed in saidfrecess and Y firmly secured to the head, a reflector secured to said ring, said head `and ring having vintegrally i() formed inter-engaging portionsY to preventoutward movement of the ring, and means acting in-` dependently of said reflector tolsecure5the ring to the head. Y, l

3. In a lighting gunit, `a wardly facing recess, a split ring disposed `within said recess and'secured to the head and provided with internal screw threads, a reflector having a threaded neck adapted to be engaged with the threads of the ring,said ring lying whollywithin the recess in the head, whereby the reflector may be set up tightly against the edge of the head, said head and' ringhaving integrally formed portions designed tobe inter-engaged upon expansion of'y said ring after its insertion into the recess in` the head to prevent.outward` movement of the ring, and means for expanding said ring to effect suchr engagement. 4

4. A light unitcomprising a ,headfand areflector, the head having an `outwardly facing recess, a split ring disposed in said recess, -a reflector having a neck disposed within and fsecured to said ring, and said head and ring having integrally formed inter-engagingy portions, to prevent outward movement of`r the-ring,l .and members passing through the wall of thev'head into said ring to expand the latter Ainto tight engagement with the head and to firmly secure it thereto, one of said members engagingsaid reflector neck to secure it against removal.;4

5. A light unit Vcomprising a head and .azjreflector, the vhead having an outwardly facing recess, a split Aring disposed in said recess and nrmly secured to the head, and av reflectorfsehead having an outfeo with an opening communicating with said recess and said ring being provided with a boss engaging in said opening. v

6. A light unit comprising a head and a reector, the head having an outwardly facingv 7. A street light unit comprising a head andl a canopy embracing a portion of said head, the head being provided with outwardly facing recesses within that portion embraced by the canopy, said. canopy being provided with inwardly projecting headed members extending into said recesses and having the heads thereof embedded in cementitious material therein to secure the canopy to the head, and an additional securing means to hold the parts together comprising members passing through the canopy and having their ends secured in the head.

8. A street light unit comprising a head of insulating material and a canopy above the head and embracing a portion thereof, said head being provided with outwardly facing recesses and said canopy being provided with inwardly projecting headed members, said members being adapted to enter said recesses, and their heads embedded incementitiousmaterial therein, said headed members comprising bolts securedv to the canopy and having nuts upon the lower end thereof.

9.r A canopy for street lighting units comprising a cup shaped hollow body and headed members secured internally to the wall of the body and projecting toward the open end thereof, said headed members comprising bolts threaded into the body of the canopy and having nuts mounted on the projecting ends thereof.

lo. A street lighting unit having a canopy vcomprising a hollow cup shaped body, bolts se- `cured, internally to the body and projecting toward the open end thereof, and a light socket adjustably secured on said bolts. l

11.,A light unit comprising a head and a reiiector, the head having an outwardly `facing recess, a split ring disposed in said recess, a reiiector having a neck disposed within and secured to said ring, said head and ring having integrally formed inter-engaging portions to prevent outward movement of the ring, and

means engaging said head and ring to urge said ring in tight engagement with the head and effect engagement of said inter-engaging means to rrnly secure the ring to the head, said means also engaging said reflector to prevent detachment thereof.

GEORGE W. BRADY. 

